27th Congress of International Council of the Aeronautical Sciences, 19 - 24 September 2010, Nice, France
Paper ICAS 2010-9.9.4

NONLINEAR TIME-DOMAIN STRUCTURE/AERODYNAMICS COUPLING IN SYSTEMS WITH CONCENTRATED STRUCTURAL NONLINEARITIES

F. Arévalo, P. García-Fogeda, H. Climent
AIRBUS Military & Universidad Politécnica de Madrid, Spain

Keywords: aeroelasticity, nonlinear, missile, freeplay, hysteresis

This paper details a practical approach for predicting the aeroelastic response (structure/aerodynamics coupling) of flexible pod/missile-type configurations with freeplay/hysteresis concentrated structural nonlinearities. The aeroelastic equations are formulated in state-space form and time-domain integrated. Results show that structural nonlinearities change the classical aeroelastic behaviour.

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